Laars HWG-M2-150 Installation, Operation And Maintenance Instructions
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Laars HWG-M2-150 Installation, Operation And Maintenance Instructions

Laars HWG-M2-150 Installation, Operation And Maintenance Instructions

9600 hwg condensing water heater for natural gas or propane
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See also: Service Manual
Installation, Operation and Maintenance Instructions
Installation,
Operation and
Maintenance
Instructions for
9600 HWG
Condensing Water
Heater for Natural Gas
or Propane
Models
HWG-M2-150
HWG-M2-175
HWG-M2-200
HWG-M2-250
FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualified in hot water heater installation and maintenance. Improper installation and/or operation could
create carbon monoxide gas in flue gases which could cause serious injury, property damage, or death.
Improper installation and/or operation will void the warranty.
If the information in this manual is not followed exactly, a fire or explosion may result
causing property damage, personal injury or loss of life.
Do not store or use gasoline or other flamable vapors and liquids in the vicinity of this or any
other appliance.
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call the fire department .
• Installation and service must be performed by a qualified installer, service agency or the
gas supplier.
WARNING
WHAT TO DO IF YOU SMELL GAS
Document 2108A

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Summary of Contents for Laars HWG-M2-150

  • Page 1 9600 HWG Condensing Water Heater for Natural Gas or Propane Models HWG-M2-150 HWG-M2-175 HWG-M2-200 HWG-M2-250 FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician, qualified in hot water heater installation and maintenance. Improper installation and/or operation could create carbon monoxide gas in flue gases which could cause serious injury, property damage, or death.

  • Page 2: Table Of Contents

    LAARS HEATING SYSTEMS Page 2 TABLE OF CONTENTS SECTION 1. SECTION 4. Introduction and Unpacking Start Up Special Installation Considerations ....3 Filling the System ........10 Checklist of Materials Installer Operation Checklist ........10 Must Provide ..........3 Unpacking ............ 3 SECTION 5.

  • Page 3: Introduction And Unpacking

    9600 HWG Water Heater Page 3 SECTION 1. 1B. Checklist of Materials Installer Must Provide Introduction & Unpacking 1A. Special Installation Considerations must not be connected to a chimney, existing venting system, or draft inducer. CAUTION Connection of this vent to a chimney, existing venting system, or draft inducer will result in poor and possibly dangerous operation.

  • Page 4: Locating And Clearances

    LAARS HEATING SYSTEMS Page 4 SECTION 2. 2B. Locating the Unit for Proper Venting Distance from the Outside Wall or Locating and Clearances Roof Termination 2A. Locating the 9600 HWG Intake Exhaust Example: Equivalent Feet: NOTE: Table 1. Location clearances.

  • Page 5: Locating Vent Openings On Outside Wall

    9600 HWG Water Heater Page 5 2C. Locating Vent Openings on Outside Wall 2F. Locating Unit with Respect to Storage Tanks SECTION 3. Installation 3A. Installing Vent Piping Terminal 2D. Locating Unit for Proper Vent Height 2E. Locating Unit with Respect to Ventilation EXHAUST DO NOT RELY ON 9600 HWG TO SUPPORT INTAKE...

  • Page 6: Connecting Gas To The 9600 Hwg Water Heater

    LAARS HEATING SYSTEMS Page 6 3B. Connecting Gas to the 9600 HWG Water Heater Position the storage tank(s). Hot water outlet piping, fittings, and accessories. Cold water supply piping, fittings and accessories. Hot water supply piping. Length Capacity of Pipe in MBTU/h (.6 Specific Gravity)

  • Page 7: Tank Temperature Control

    9600 HWG Water Heater Page 7 NOTE: A listed temperature and pressure Amount Amount relief valve listed as complying with the Standard Maximum Copper tube or deducted for deducted for allowable tubing for Relief Valves and Automatic Gas Shutoff pipe size each additional each additional length...
  • Page 8 LAARS HEATING SYSTEMS Page 8 Figure 6. Single 9600 HWG & Storage Tank. Figure 7. Two temperature system.
  • Page 9 9600 HWG Water Heater Page 9 Figure 8. Multiple 9600 HWG's & storage tanks.

  • Page 10: Start Up

    LAARS HEATING SYSTEMS Page 10 SECTION 4. Start Up 4A. Filling the System CAUTION: 4B. Operation Checklist NOTE: NOTE: GROUND 120 VAC LINE 120 VAC NEUTRAL RED (LOW VOLTAGE) - T APPLICABLE WH/RED (LOW VOLTAGE) - T WIRING SCHEMATICS IN THIS...

  • Page 11: Maintenance

    9600 HWG Water Heater Page 11 SECTION 5. Maintenance 5A. Owner Care and Maintenance NOTE: Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been immersed.

  • Page 12: And/Or Burner

    LAARS HEATING SYSTEMS Page 12 5E. Cleaning Combustion Chamber Coil and/or Burner Note: Figure 11. Manual gas shutoff. Figure 12. Gas orifice union. 5F. Combined Water (potable) Heating and Space Heating (see Figure 15) Figure 13. Switch location.

  • Page 13: Quick Reference Trouble Shooter

    9600 HWG Water Heater Page 13 6C. Delayed Ignition Unit starts or stops with a “pop”. Figure 14. Cutaway view. SECTION 6. 6D. Occasional Lockouts Quick Reference Trouble Shooter Requires interruption of power or reset of safety limit to re-start. 6A.

  • Page 14: S9301A Control Module

    Quick Reference Trouble Shooter S9301A Control Module NORMAL SEQUENCE FAILURE TO COMPLETE EVENT CYCLE CONTROL FUNCTION NO LIGHT OR EVENT LIGHT CONFIRMS EVENT ACTION FOR DIAGNOSIS VERIFIED BLINKING LIGHT A. Power switch on. Integrated boiler control Green "POWER" light on. 1.
  • Page 15 9600 HWG Water Heater Page 15 Figure 16. Wiring diagram. “Caution: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.” Verify Proper Operation After Servicing! Figure 17. Ladder diagram.
  • Page 16 LAARS HEATING SYSTEMS Page 16 Figure 18. Lighting and shutdown procedures.

  • Page 17: Replacement Parts List

    9600 HWG Water Heater Page 17 SECTION 7. Replacement Parts List Part Number Description 2400-322 Gasket Kit 2400-079 Blower Assembly (#5) 2400-310 Blower Assembly (HWG-250) 2400-086 Combustion Coil Assembly (#9) 2400-082 Flame Holder (#7) 2400-308 Flame Holder (HWG-250) 2400-286 Ignitor 2400-088 Capacitor, Motor Starter 2400-224...
  • Page 18 LAARS HEATING SYSTEMS Page 18...
  • Page 19 9600 HWG Water Heater Page 19...
  • Page 20 6000 Condor Drive, Moorpark, CA 93021 • 805.529.2000 • FAX 805.529.5934 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • FAX 603.335.3355 480 S. Service Road West, Oakville, Ontario, Canada L6K 2H4 • 905.844.8233 • FAX 905.844.2635 www.laars.com Litho in U.S.A. © Laars Heating Systems 0003 Document 2108A...

This manual is also suitable for:

Hwg-m2-250Hwg-m2-175Hwg-m2-200

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